Improvement in valves for steam and other enginery



gaat cupa;

To all whom it ana/y concern:

GEnAinnsicKnns, or1 B'osToN, MAssACHUsET-Ts.

.13mm Patent 1ra-95,155, dated Septante 21, 1869.

i IMPROVEMENT IN VALVES PQR STEAM AND OTHER ENGINERY.

, AThe Schedule referred to in these Letters Patent 'and making part of the same.

Be it `known that I, GERARD SICKELS, of Boston, in the county of Suffolk, and State of Massachusetts, have invented a new and improved Valve for Steam- Engines, Water-Wheels, Water-Meters, &c., of which the following` is a full, clear, and exact description,

reference being had to the'accompanying drawing, p ing, making a parti of this specification, in which--` Figure 1 is a longitudinal vertical section of the i valve embodying my invention.

Figure 2 is a transverse `vertical section of the same. l Figure 3 is a modification of same.

V The same-letters refer to the same parts in the dify ferent figures The object of my invention is to produce a simple andeective `balance-valve, which opens and closes '.the ports qnichly and automatically; and` My invention consists in a heavy plate with cir cular vertical ends, .the upper portion of vwhich is providedwith two concave curved faces, the lower portion forming a straight surface.V Said plate forms the valve,

m and vihrates within a sliding block, which latter moves and fits snugly within the valve-chest.` The sliding block isfprovided with `suitable ports,.which correspond to those in the valve-chest. y

My invention consists, further, in the valve-stem, acting ona double-arm lever, the longeror upperl arms being provided with` friction-rollers, which, by supporting the under snrfaceof valve,`holdor raise'the saine and the sliding' block, by being operated by.

valvestem toward-the, centre of sliding block.

My invention consists also` in providing the lower portion of thevertical. circular ends of valve with a recess, ofsuch form and size as to correspond to pyramidical projections `in the slidingblock, and a space for the required.`movement of the valve, in such a mmanner, thatsyhen one side of the recessrests against one side of the projections, the edge of the'valve will `stop communication with the ports `andthe space below the valve, while it opens Athe space above the` 'y valve to the port. l'lhe'wopposite end will have the communicationsreversed. C

Referring to the drawings- 'i A is the valve-chest, `with exhanst-pipehBand pas- .'sages a a leading to the -ends of the cylinder, and

`:inlet-pipes C at the top of chest.

D ist-he sliding block, with cylindrical inside, and provided with openings b d and ports c c.

The valve Efts snugly inside of. sliding block D, and is supported with the circular ends f in corresponding openings of the latter.

g g are projections the lower'portion ofthe block D.

The valve-stem G operates on4 short arm 4of lever L, which is pivoted at h h', while the longer arms are i V provided vwith rollers c' i', which actv'upon thelowei" face of valve E. y

" Operation;

Steam or water being admitted atI O, will'enter,"

through b, the sliding block` D,'and pass through port-c and passage a into the cylinder, where it propels the piston, while the exhaust, passing through ct', port c', intothe block D, underneath' the valve, will be removed through discharge-pipe B.- The valvestem G, now moving, will actv upon lever L, and throw rollers i i' toward the centre of block D, thus raising the latter and valve. The further motion of `roller i will r`allowthevalve E to drop quickly toward port c', until arrested by *the sides of the recess inf, striking against the projections g g of block D, thus reversing the position ofthe valve, and permitting the steam or water to enter through port c into passage a.- yBut the roller'must pass beyond the ,centre ofthe valve E before the pressure of steam,weight of water, Src., upon the upper sideof the valveE, will cause the depression necessaryto close the port. ,Y

By this means, it will be seen that advantages will be secured which cannot be found in` other Vvalves for accomplishing the rapid opening and cutting oil' ofthe motive-power. w

The valve can be operated with little loss of power. It being a balancevalve, 4there is no pressure against sliding surface, nor are heavy weights or springs required for` the quick action of the valve.

I do not confine myself to the exact construction of valve and sliding block, as4 herein` explained, but it' may be modified by substituting, for'the sliding block, two sliding valves K K, which are operated by the tilting of plate or valve E,'as shown in iig. 3.

What I claim as new, and-, desire to secure by Let ters Patent, is` i 1. The .bala1\ce-valve.-E, constructed substantially as herein described. y

2. The valve' E, in combination with sliding block l -D and valve-chest A, substantially as described.

` 3. The valve E, block D, chest A, in combination with'` lever L and valve-stem G, substantially as above specified. l

' in testimony whereof, I have signed my name'to `this specification, in the presence of -two subscribing witnesses.

GERARD SICKELS.

Witnesses:

' CARROLL D. WRIGHT, c AUSTIN S. HowAn'H. 

